AND A DENTAL NOTATION. 
487 
There is a stuffed skin of this species which shows the same number of incisors, 
. 1-1 
VIZ. 
I have seen no stage of dentition of the Phac. Pallasii corresponding with figs. 6 
and 7 of Phac. JEUani. The next example, after the stage figured by Home, is 
shown in a skull from the Guinea Coast, in which the grinding series includes 3 — 3 
in both jaws, like that in the upper jaw of the Phac. Pallasii and lower jaw of the 
Phac. jPlliani, figured in ‘Les Dents des Manimif^res’ of M. F. Cuvier, Tab. 87» 
These teeth, in each case, are p A, m2 and m 3 on each side of both jaws. In the 
specimen before me, p A is much worn, and is pressed into close contact with m2. 
The anterior half of the grinding surface of this tooth is worn down to tlie common 
dentinal base, and both the anterior and posterior surfaces of the crown are excavated 
by the pressure of the two contiguous teeth, as in fig. 10. That a large grinder, like 
m 1, figs. 4, 5 and 6, should have been interposed between the first and second grinders 
in the specimen here described, could never have been suspected without a knowledge 
of those earlier stages of the dentition of the genus which have been described. 
Baron Cuvier describes the molar teeth of the Phacochere as being three on each 
side of both jaws in the 4to edition of the ‘ Ossemens Fossiles’ (1822)*, and the 
same numerical formula is retained in the posthumous 8vo edition of 1834-^. With 
regard to the mode of succession of these teeth, the Baron adopts the conclusions of 
Sir Everard Home ; and in both editions of the ^ Regne Animal,’ after noticing the 
similarity of composition of these teeth with the grinders of the Elephant, he adds 
that they, in like manner, succeed one another from behind forwards:|:. 
His brother, M. Fr. Cuvier, adopting the same view in the ‘Dents de Mammiferes,’ 
describes the dentition of the Wart-Hogs as differing altogether from that of the 
rest of the Hog-tribe. “Nous void arrives,” he writes, “a un syst^me de dentition 
tout a fait different de celui des sangliers” (p. 213) : he adopts the specimens repre- 
sented in the pi. 87 above cited, and describes the figures of that plate as exempli- 
fying the normal adult dentition of the genus §. The anterior of the three grinders 
is described as the ‘preinid’e macheli^re’ (p. 214); and the second as ‘la seconde 
macheliere,’ the latter being said to be composed of four tubercles, which by usage 
present four little elliptical or circular figures surrounded by enamel. And this, 
indeed, is the case at the extreme stage of attrition which he has figured ; but, at an 
earlier period of usage, the crown of the tooth presents ten of those enamel-girted cir- 
cular or elliptical islands of dentine, surrounding two, three, or four median ones (figs. 
4,5,6, m 2). The last large molar presents twenty-five of these islands in the upper 
jaw in three linear series, nine being central, and twenty-six in the lower jaw, nine 
* Tom. ii. p. 123. f Tom. iii. p. 235. + Tom. i. p. 244. 
§ In this he is followed by Lesson (Manuel de Mammalogie, p. 340), Fischer (Synopsis Maramalium, 
g g 
p. 423) and other systematic mammalogists, who assign molars 
3 — 3 
Phacochcerus, 
as one of the characters of the genus 
